Mitigation of Progressive Collapse by the Activation of the Elasto-Plastic Catenary Behaviour of R.C. Slab Structures

Palmisano, Fabrizio

doi:10.2174/1874836801408010122

Cited by 8 publications

(7 citation statements)

References 16 publications

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“…So far the LPM has been used for a wide range of applications: RC structures [8,16], masonry structures [17][18][19][20], seismo-resistant structures [21], progressive collapse [22], assessment of existing constructions [23][24][25].…”

Section: The Transversal Shear Behaviourmentioning

confidence: 99%

A preliminary study on shear capacity of historical reinforced concrete beams

Palmisano¹

2017

Int. J. HA

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In European cities there are many reinforced concrete (RC) constructions belonging to the early 20th century and, in most cases, these pieces of work so rich in historical, architectural and cultural significance urgently require maintenance and restoration.Reinforced concrete works, from the origins until the release of the first technical standards, were built by applying patented systems (e.g. Monnier's, Hennebique's) that were often the result of individual intuitions more than scientific and technical knowledge. This is one of the reasons that many of the structures built in those years, and still surviving, could not be considered reliable with regard to the structural safety, as it is presently intended.In this scenario, the evaluation of RC beam shear capacity becomes crucial. In this article, analysing the tests carried out in Stuttgart in the early 20th century, a preliminary study on the shear capacity assessment of historical RC beams is presented. The aim is to verify the applicability to these kinds of beams of the relations given for new constructions in the present codes. Moreover a novel formulation for the transversal shear capacity for historical RC beams with U-shaped plates is proposed. Keywords: Load Path Method, reinforced concrete, shear capacity, Strut-and-Tie Model INTRODUCTIONThe main task to be faced in the restoration of the early RC constructions is the assessment of their actual structural capacity, in order to provide the proper guidelines for retrofitting, rehabilitation and conservation.It is not so straightforward to apply to ancient concrete structures the same methods of analysis that are used for the design of new constructions, and this is particularly true with regard to shear capacity. In fact, models and formulations used in the standard design practice are mainly based on the experimental observation of the behaviour of real-scale structural elements that are different from those of the early RC constructions. The constructive technique and the structural details concerning the shear reinforcement have changed much in the last century, much more than those regarding longitudinal reinforcement.Present methods to evaluate shear capacity seem to be not applicable to old RC structures mainly due to the following reasons:

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Section: The Transversal Shear Behaviourmentioning

confidence: 99%

A preliminary study on shear capacity of historical reinforced concrete beams

Palmisano¹

2017

Int. J. HA

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“…Regarding the collapse, the most important critical aspects of the structural conceptual design are the following: very few vertical diaphragms, weakening of the collapsed corner due to the presence of large openings, lack of tying systems [3], eccentric width reduction of the masonry walls from the lower to the upper floor, ground floor masonry piers narrower than those of the other floors (because of the larger openings at the ground floor; fig. 4).…”

Section: Structural Descriptionmentioning

confidence: 99%

A meaningful case of structural assessment following the collapse of a historical masonry building

Palmisano¹,

Vitone²

2015

WIT Transactions on the Built Environment

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The partial collapse of the so-called 'Palazzo Edilizia', which occurred in Salerno (Italy) on the night of June 15, 2007, is a meaningful case since it has revealed that 'hidden' structural defects can be the cause of ruinous and apparently unpredictable failures. The paper presents the investigations carried out by the technical consultants of the Criminal Investigate Magistrate. The purpose of the investigations was not only to determine the causes of such unexpected failure but also to give the Investigate Magistrate sufficient data in order to identify the parties responsible.

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“…Paper [43] focuses on this type of structures and analyses the mechanism of resistance of such systems to progressive collapse. Paper [44] discusses mitigation of PC by activating the elastoplastic chain. The progressive collapse of multi-storey buildings depends on several parameters, namely on GRAĐEVINAR 73 (2021) 1, 27-44…”

Section: Introduction and Literature Overviewmentioning

confidence: 99%

Fragility and robustness analysis of a multistorey RC building

2021

JCE

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The robustness of a reinforced concrete (RC) five-storey building (frame system stiffened by walls) is analysed in the paper. A high ductility class structure is designed in accordance with structural Eurocodes. The response of the structure to eight different scenarios of the ground floor vertical element loss is analysed. Nonlinear Static Analysis (NSA) and Nonlinear Dynamic Analysis (NDA) methods are used for the robustness analysis. Fragility curves of the building are derived from statistical analysis of these results. The values obtained through NSA and NDA, damage limit states of the system, and fragility curves, are compared. The influence of the position of the removed element on robustness of the structure is also analysed.

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Mitigation of Progressive Collapse by the Activation of the Elasto-Plastic Catenary Behaviour of R.C. Slab Structures

Cited by 8 publications

References 16 publications

A preliminary study on shear capacity of historical reinforced concrete beams

A preliminary study on shear capacity of historical reinforced concrete beams

A meaningful case of structural assessment following the collapse of a historical masonry building

Fragility and robustness analysis of a multistorey RC building

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